A mechanism is provided for dynamic cache allocation using bandwidth. In a trajectory-based game of chance, a trajectory of a game object may be generated in a 3-D gaming environment. The services provide output with multiple variations based on different devices, and an intermediary selects the variation best suited for the requesting device. Said process is environmentally friendly and has a very good energy balance. In certain embodiments, the suction orifice of the punching roll is ventilated with a gas stream to facilitate detachment of the punched-out product; and a vacuum is applied to the conveyor belt to draw the detached product thereto and hold it thereon under suction. The requested file is retrieved from a file server, responsive to a determination that the second isolation environment does not contain the file and that the file is identified in the enumeration.